Five sleep-wake profiles rewrite the basic night-owl vs early-bird labels

1 min read
Source: McGill University
Five sleep-wake profiles rewrite the basic night-owl vs early-bird labels
Photo: McGill University
TL;DR

A McGill-led study using AI, brain imaging and UK Biobank data identifies five chronotype subtypes—three night owls and two early birds—each linked to distinct health and behavioral patterns, suggesting personalized sleep guidance beyond simple night-owl/early-bird categorizations.

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